Single crystal growth of organic semiconductors by the Repeated Solid Solvent Growth Method using melted anthracene as a solvent

We propose a new method of growing single crystals of organic molecular sem iconductors, using melted anthracene as a solvent. The method is called the Repeated Solid Solvent Growth Method. Needle-like single crystals of Cu ph thalocyanine up to 10 mm in length have been grown by repeated cooling of a glass ampoule which contains the anthracene melt dissolving the molecule. We have found that the crystals tend to grow larger as the procedure is rep eated. The crystal growth process is discussed on the basis of the temperat ure gradient of the growing ampoule. (C) 2001 Elsevier Science B.V. All rig hts reserved.